/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/NiagaraParameterPanelViewModel.h
Delegate to get the names of all selected parameter items.
typedef TBaseDelegate_NoParams< [TArray](API\Runtime\Core\Containers\TArray)< [FName](API\Runtime\Core\UObject\FName) > > FOnGetSelectedParameterNames